volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Three Way Converter - Replacement of Pressed Bolts|Page 1129 > < Three Way Converter - Replacement of Pressed Bolts|Page 1127
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Catalytic Converter: Testing and Inspection

TESTING PROCEDURE:
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Fig. 62a CATALYTIC CONVERTER TESTING

(except non turbo engine)
Upstream of the catalytic converter is a plug for connecting a CO meter.
The efficiency of the catalytic converter can be checked by measuring and comparing the CO content before and after the converter. The CO content
after the catalytic converter must be substantially lower then the CO content before the converter.  Fig. 62a.

 

An additional testing method can be used to check the catalytic converter visually. Remove the catalytic converter from the vehicle. With either opening
toward a light source, inspect the ceramic insert from both sides. If the ceramic insert is broken, melted or clogged the catalytic converter must be
replaced.

Three Way Converter - Replacement of Pressed Bolts|Page 1129 > < Three Way Converter - Replacement of Pressed Bolts|Page 1127